<template lang="html">
  <div class="home-container">
    <el-row class="container">
      <el-col :span="24" class="header">
        <el-col :span="10" class="logo" :class="collapsed?'logo-collapse-width':'logo-width'">{{collapsed?'':sysName}}</el-col>
        <el-col :span="10">
          <div class="tools" @click.prevent="collapseFun">
            <i class="fa fa-align-justify"></i>
          </div>
        </el-col>
        <el-col :span="4" class="userinfo">
          <el-dropdown trigger="hover">
            <span class="el-dropdown-link userinfo-inner">{{sysUserName}}</span>
            <el-dropdown-menu slot="dropdown">
              <el-dropdown-item>我的消息</el-dropdown-item>
              <el-dropdown-item>设置</el-dropdown-item>
              <el-dropdown-item divided @click.native="logoutFun">退出登录</el-dropdown-item>
            </el-dropdown-menu>
          </el-dropdown>
        </el-col>
      </el-col>
      <el-col :span="24" class="main">
        <aside :class="collapsed?'menu-collapsed':'menu-expanded'">
          <!--导航菜单-->
          <el-menu :default-active="$route.path" class="el-menu-vertical-demo" unique-opened router v-show="!collapsed">
            <template v-for="(item,index) in $router.options.routes" v-if="!item.hidden">
              <el-submenu :index="index+''" v-if="!item.leaf">
                <template slot="title"><i :class="item.iconCls"></i>{{item.name}}</template>
                <el-menu-item v-for="child in item.children" :index="child.path" :key="child.path" v-if="!child.hidden">{{child.name}}</el-menu-item>
              </el-submenu>
              <el-menu-item v-if="item.leaf&&item.children.length>0" :index="item.children[0].path"><i :class="item.iconCls"></i>{{item.children[0].name}}</el-menu-item>
            </template>
          </el-menu>
          <!--导航菜单-折叠后-->
          <ul class="el-menu el-menu-vertical-demo collapsed" v-show="collapsed" ref="menuCollapsed">
            <li v-for="(item,index) in $router.options.routes" v-if="!item.hidden" class="el-submenu item">
              <template v-if="!item.leaf">
                <div class="el-submenu__title" style="padding-left: 20px;" @mouseover="showMenu(index,true)" @mouseout="showMenu(index,false)">
                  <i :class="item.iconCls"></i>
                </div>
                <ul class="el-menu submenu" :class="'submenu-hook-'+index" @mouseover="showMenu(index,true)" @mouseout="showMenu(index,false)">
                  <li v-for="child in item.children" v-if="!child.hidden" :key="child.path" class="el-menu-item" style="padding-left: 40px;height: 56px;line-height: 56px;" :class="$route.path==child.path?'is-active':''" @click="$router.push(child.path)">{{child.name}}</li>
                </ul>
              </template>
              <template v-else>
                <li class="el-submenu">
                  <div class="el-submenu__title el-menu-item" style="padding-left: 20px;height: 56px;line-height: 56px;padding: 0 20px;" :class="$route.path==item.children[0].path?'is-active':''" @click="$router.push(item.children[0].path)"><i :class="item.iconCls"></i></div>
                </li>
              </template>
            </li>
          </ul>
        </aside>

        <section class="content-container">
          <div class="grid-content bg-purple-light">
            <el-col :span="24" class="breadcrumb-container">
              <strong class="title">{{$route.name}}</strong>
              <el-breadcrumb separator="/" class="breadcrumb-inner">
                <el-breadcrumb-item v-for="item in $route.matched" :key="item.path">{{ item.name }}</el-breadcrumb-item>
              </el-breadcrumb>
            </el-col>
            <el-col :span="24" class="content-wrapper">
              <transition name="fade" mode="out-in">
                <router-view></router-view>
              </transition>
            </el-col>
          </div>
        </section>
      </el-col>
    </el-row>
  </div>
</template>

<script>
  export default {
    components: {},
    data() {
      return {
        sysName: 'VueDemo',
        sysUserName: '',
        collapsed: false
      }
    },
    methods: {
      //折叠导航栏
      collapseFun: function() {
        this.collapsed = !this.collapsed;
      },
      showMenu(i, status){
        this.$refs.menuCollapsed.getElementsByClassName('submenu-hook-' + i)[0].style.display = status ? 'block' : 'none';
      },
      //退出登录
      logoutFun: function() {
        var _this = this;
        this.$confirm('确认退出吗?', '提示', {
          //type: 'warning'
        }).then(() => {
          sessionStorage.removeItem('user');
          _this.$router.push('/login');
        }).catch(() => {

        });


      },
    },
    mounted() {
      var user = sessionStorage.getItem('user');
      if (user) {
        user = JSON.parse(user);
        this.sysUserName = user.username || '';
      }
    }
  }
</script>

<style scoped lang="scss">
  .container {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
    .header {
      height: 60px;
      line-height: 60px;
      background: #bbdbfb;
      color: #fff;
      .userinfo {
        text-align: right;
        padding-right: 35px;
        float: right;
        .userinfo-inner {
          cursor: pointer;
          color: #fff;
        }
      }
      .logo {
        height: 60px;
        font-size: 22px;
        padding-left: 20px;
        padding-right: 20px;
        border-color: rgba(238,241,146,0.3);
        border-right-width: 1px;
        border-right-style: solid;
      }
      .logo-width {
        width: 230px;
      }
      .logo-collapse-width {
        width: 60px;
      }
      .tools {
        padding: 0 23px;
        width: 14px;
        height: 60px;
        line-height: 60px;
        cursor: pointer;
      }
    }
    .main {
      display: flex;
      position: absolute;
      top: 60px;
      bottom: 0;
      overflow: hidden;
      aside {
        flex: 0 0 230px;
        width: 230px;
        .el-menu {
          height: 100%;
        }
        .collapsed {
          width: 60px;
          .item {
            position: relative;
          }
          .submenu {
            position: absolute;
            top: 0;
            left: 60px;
            z-index: 99999;
            height: auto;
            display: none;
          }
        }
      }
      .menu-collapsed {
        flex: 0 0 60px;
        width: 60px;
      }
      .menu-expanded {
        flex: 0 0 230px;
        width: 230px;
      }
      .content-container {
        flex: 1;
        overflow-y: scroll;
        padding: 20px;
        .breadcrumb-container {
          .title {
            width: 200px;
            float: left;
            color: #475669;
          }
          .breadcrumb-inner {
            float: right;
          }
        }
        .content-wrapper {
          background-color: #fff;
          box-sizing: border-box;
        }
      }
    }
  }
</style>
